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光线照射在金属材料表面时,从金属表面释放出电子的现象称为光电效应.利用光电效应法测普朗克常数是一种简单有效的方法,但是由于测量方法和数据处理的原因,使得实验误差比较大.通常测量的结果与公认值之间的误差在10%以上.用最小二乘法处理数据,可以得到比较好的线性拟合,通过比较两种方法可以得出,最小二乘法处理数据是比较理想的方法.一、实验原理
When the light is irradiated on the surface of the metal material, the phenomenon of releasing electrons from the metal surface is called a photoelectric effect. Using the photoelectric effect method to measure the Planck constant is a simple and effective method, but due to measurement methods and data processing reasons, the experiment is made The error is relatively large. Usually the error between the measured result and the recognized value is more than 10%. The least square method is used to process the data, and a better linear fitting can be obtained. By comparing the two methods, the least square method can be used to process the data. Is an ideal method. First, the experimental principle